[ Modal Verb ]
Passengers ___ smoke until the signs have been switched off.
A. mustn’t
B. can’t
C. needn’t
D. mightn’t

Random Topics:
Prepositions and Phrasal VerbsWish / If only ( Present)Commas and Subordinating ConjunctionsBasic GrammarModal Verbs & Time PrepositionsComparativePronoun Antecedent AgreementIntermediate PrepositionsInterjections, Tag Questions and Nouns of Direct AddressVerb Tense, Pronouns and AntecedentsOther quiz:
Tenses › ViewI _____ my favorite book last weekend.
A. reads
B. read
C. reading
D. readed
Grammar › View
___ is your favourite animal?
A. What
B. When
C. Whose
Modals of Probability › ViewIt’s got four legs, so it ……………….. be a snake.
A. could
B. can’t
Few vs. Little › View
Did you take ______ photos when you were away on holiday?
A. Much
B. Many
C. Few
D. Little
